Crossbow



FIG. 1 is a perspective, bottom view of my new design;

FIG. 2 is a perspective, side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines in FIGS. 1-7 are for illustrative purposes and form no part of the claimed design. 

CLAIM I claim the ornamental design for a crossbow, as shown and described. 